The exchange is reminiscent of the famous-to-geeks-everywhere line from Star Wars V: The Empire Strikes Back, where Princess Leia says "I love you" to Han Solo, and he replies, "I know." And of course, the exchange showed up again in the next Star Wars movie, but with each character saying the opposite line.

This time around, it's the woman who first responds with the knowing smile, which should please Wonder Woman fans. And of course, "shippers" (who support the relationship) of Wonder Woman and Superman — particularly shipper tumblr pages — are in "squee" mode about "the feels."

But the story also forwards several important plot points that presumably lead into April's beginning of the "Superman: Doomed" crossover, including the opening of the Phantom Zone (where Doomsday currently resides), and an ending that puts the health of Superman and Wonder Woman in question.

It's also important to remember that the relationship of Superman and Wonder Woman is allegedly going to cause something disastrous in the DCU; according to a Booster Gold from the future who came back in time to warn his younger self (see Justice League International Annual #1 written by Geoff Johns and Dan DiDio).

If that scene still holds true in the DCU — and since it was written by Johns and DiDio, it probably does — than the fact that Superman has told Wonder Woman that he loves her gives even more weight to Booster's prediction.

Check back with Newsarama later this week as we ask Superman/Wonder Woman writer Charles Soule about the latest developments in the title.